Thermodynamic modeling of thermal processes involving actinides (U, Am, Pu) in the course of heating radioactive graphite in steam

2017 ◽  
Vol 59 (5) ◽  
pp. 507-511 ◽  
Author(s):  
N. M. Barbin ◽  
A. M. Kobelev ◽  
D. I. Terent’ev ◽  
S. G. Alekseev
Keyword(s):  
Thermodynamic Modeling ◽  
Thermal Processes ◽  
Radioactive Graphite

scholarly journals BEHAVIOR OF CARBON AND URANIUM AT RADIOACTIVE GRAPHITE HEATING IN WATER VAPOR. THERMODYNAMIC MODELING

2018 ◽  
Vol 59 (9) ◽  
pp. 16 ◽  
Author(s):  
Nikolaiy M. Barbin ◽  
Anton M. Kobelev ◽  
Dmiriy I. Terent’ev ◽  
Sergeiy G. Alexeev
Keyword(s):  
Water Vapor ◽  
High Temperature ◽  
Thermodynamic Modeling ◽  
Radioactive Carbon ◽  
Radioactive Graphite

The behavior of radioactive graphite was studied by the method of thermodynamic modeling at high temperature in water vapor. The distribution of radioactive carbon and uranium on phase states is given.

Thermodynamic Modeling of PCDD/Fs Formation in Thermal Processes

2001 ◽  
Vol 35 (9) ◽  
pp. 1867-1874 ◽  
Author(s):  
Pengfu Tan ◽  
Iñaki Hurtado ◽  
Dieter Neuschütz ◽  
Gunnar Eriksson
Keyword(s):  
Thermodynamic Modeling ◽  
Thermal Processes

THERMODYNAMIC MODELING OF RADIONUCLIDE BEHAVIOR DURING HEATING (BURNING) OF RADIOACTIVE GRAPHITE IN VAPOURS OF WATER

2014 ◽  
Vol 23 (10) ◽  
pp. 38-47 ◽  
Author(s):  
N. M. BARBIN ◽  
◽  
A. M. KOBELEV ◽  
D. I. TERENTYEV ◽  
S. G. ALEXEEV ◽  
...  
Keyword(s):  
Thermodynamic Modeling ◽  
Radioactive Graphite

THERMODYNAMIC MODELING OF RADIONUCLIDE BEHAVIOR DURING HEATING (BURNING) OF RADIOACTIVE GRAPHITE IN THE AIR ATMOSPHERE

2014 ◽  
Vol 23 (3) ◽  
pp. 58-67 ◽  
Author(s):  
N. M. BARBIN ◽  
◽  
D. I. TERENTIEV ◽  
A. V. PESHKOV ◽  
S. G. ALEXEEV ◽  
...  
Keyword(s):  
Thermodynamic Modeling ◽  
Radioactive Graphite ◽  
Air Atmosphere

THERMODYNAMIC MODELING OF RADIONUCLIDE BEHAVIOR DURING HEATING (BURNING) OF RADIOACTIVE GRAPHITE IN THE NITROGEN ATMOSPHERE

2014 ◽  
Vol 23 (12) ◽  
pp. 34-44 ◽  
Author(s):  
N. M. BARBIN ◽  
◽  
M. R. SHAVALEEV ◽  
D. I. TERENTYEV ◽  
S. G. ALEXEEV ◽  
...  
Keyword(s):  
Thermodynamic Modeling ◽  
Nitrogen Atmosphere ◽  
Radioactive Graphite

scholarly journals Thermodynamic Analysis of Radioactive Graphite Oxidation in NiO-NaCl-KCl-Na2CO3-K2CO3 Melt in the Atmosphere of Argon

2020 ◽  
Author(s):  
Nikolaj Mihajlovich Barbin ◽  
Anton Mihajlovich Kobelev ◽  
Dmitrij Ivanovich Terent'ev ◽  
Sergej Gennad'evich Alekseev
Keyword(s):  
Phase Composition ◽  
Thermodynamic Modeling ◽  
Equilibrium Phase ◽  
Phase Changes ◽  
Temperature Range ◽  
Radioactive Graphite ◽  
Reference Information ◽  
Graphite Oxidation ◽  
Condensed Carbon ◽  
The Individual

Behavior of U, Pu radionuclides was investigated when heating radioactive graphite in NaCl – KCl – Na2CO3 – K2CO3 melt with NiO additives using the thermodynamic modeling method. Calculations were made by the TERRA software that is used for the determination of phase composition, thermodynamic and transport properties, taking into account chemical and phase changes in temperature range 373 – 3273 K. Calculation of equilibrium phase composition and parameters of equilibrium was carried out using reference information about properties of the individual substances (INVATERMO, HSC, etc.). This study demonstrates that at a temperature of 1273 K the condensed carbon burns down with the formation of CO and CO2. Increasing temperature to 1673 K causes the condensed compounds of uranium to evaporate. This study determined that uranium exists in the form of ionized UO−3 in temperature range from 1673 to 3273 K. Plutonium exists in the form of gaseous PuO2, PuO in temperature range 2373 – 3273 K. Keywords: thermodynamic modeling, radionuclides, radioactive graphite

Sign in / Sign up

Export Citation Format

Share Document